Benzophenone-4(UV-284)
| Testing Items | Specifications |
| Appearance | Off-white powder |
| Purity | Not less than 99.50% |
| Melting Point | Not less than 160.0℃ |
| Loss on Drying | Not more than 2.0% |
| pH Value | 1.20 ~ 2.20 |
| Colour(Gardner) | Not more than 4.0 |
| Turbidity | Not more than 16.0NTU |
| Specific Extinction | At 285nm: Not less than 460 |
| At 325nm: Not less than 290 | |
| K Value | 46.0 ~ 50.0 |
| Heavy Metals | Not more than 5 ppm |
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